There shouldn't be much needing an explanation here. But anyhow: without any hints, you might find some “hidden feature” only accidentally. Hence, a few words on it:
Not much help needed for the basics: heading on top, articles below – click a title to open the corresponding article. Anything else?
Of course I've also thought of “small screens”, for example Smartphones in portrait mode. Elements are the same there. Just the box listing all tags available (4) has been moved below the article list, to make reading easier: